Elevator controller



R. A. ISENBEHG.

Patented Mar. 2l, 1922.

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R. A. ISENBERG.

ELEVATOR CONTROLLER.

APPLICATION man MAR. 15. |921 Patented Mar. 2L )1.922,

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RUDOLF a. Is

ERG, 0F SAN 1E' CISCO; CALIFORNIA..

i ELEVATOR CONTROLE.

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Application mea nach is, 1.921.

To all wwm 'it may concern.'

Be it known that I, RUDOLF A. ISENBERG, a' citizen of the United States," residing in the city and. county of San Francisco and State of California, have invented a new fand useful lmrovement in an Elevator Controller, of w ich the following is a specication. j

My invention relates to improvements in an elevator controller wherein the controller is actuated by means within the elevator shaft and arranged relatively to the floors or predeterminedvpoints in an elevator shaft for stopping said elevator at a level with said predetermined points.

This invention is Aan improvement on the device disclosed in my copending application filed the 15thday of March, 1921, Serial No. 452,587 reference to which is hereby made, and the present invention consists in providing im roved means for reventin the elevator rom passing a predetermine point when the mechanism has been set to stop said .elevator at said oint.

lt 'is also an object of t e present invention to automatically return the elevator to a predetermined oint after having passed the same during t e time the controller was set fora stop at saidpoint.

A still further object of the invention is to `rovide an improved adjustable cam gui e by means of which adjustment may be easily and readily made tostop the elevator at a level wtha floor.Y f A Another object is to provide an improved means, arranged to be operated with the controller handle of the controller for releasing the contact arm from the leveling mechanism whereby said elevator may be stopped at any point within the elevator shaft.

ll accomplish these and other objects by means of the improved device disclosed in the drawings forming a part of the present specification wherein like characters of reference are used to designate lsimilar parts throughout said specification and.drawings,-

and in which- Fig. 1 is a broken elevation of myzim l proved controller.

K: portion o an elevator shaft disclosing t application rey invention; and

Specification of Letters Patent.

Patented. Mar. 2i, 31922.

Serial No. 452,536.

'F ig. 4 is a transverse sectional view of the cam guide adjusting mechanism disclosed 1n a portlon of Fig. 2.

Referring to the drawings the numeral 1 is used to designate an elevator shaft having the usual guides 2 upon which is slidably mounted an elevator 3 having a suitable controller box 4 therein.

The controller box 4 is rovided with the usual contact arm 5 pivota ly mounted within said box to engage two sets of contacts 6 and .6 electrically connected to elevator operating mechanism, not shown, whereby said elevator ma Te contact arm 5 is rigidly mounted upon a sleeve 7 rotatably mounted within the approximate center of the box l and projectin rearwardl of said box and through the a jacent wal of the elevator 3 as d1sclosed in Fig. 2 of the drawings, said rear end of said sleeve 7 being provided with a bracket pivotally connected to the lower end of a lever 9 carrying a suitable anti-friction roller 10 at the free end thereof, said roller 1() bein arranged, under certain conditions hereina rmore fully set forth,;to engage either side of adjustable cam guides 12 arranged at regular intervals upon the wall of the elevator shaft 1 adjacent the controller side of the elevator 3, said cam uides being provided at both ends withvlndependently adjustable and telescopic double cams 13, whose alternate faces, on adjacent ends,

.extend beyond the plane of movement of the roller 10 when ina stopped position, as disclosed in Figs. A.l and 3 of the drawings, the purpose of which will hereinafter be more ully set forth.

The contact arm 5 is normally retained, by'means of suitable centering springs 14., in mid' or stop position to comply with requirenients governing the operation of passonger elevators.

The contact arm 5is actuated b means oi the usual controller arm l5 rotata ly mounted upon the sleeve 7 and normally retained inalignment with saidlcontect arm 5 by meansI of suitable centering springs 16 so 105 that said controller arm 16 normally actuates the contact arm 5.

The controller arm 15 is provided with a hand grip 1 7 pivotally connected thereto and having an extension 18 which projects through a slot 19 in the sleeve 7 adjacent the Contact arm 5 and engages an annular be moved in either direction or stop ed wit in the shaft 1.

groove 20 within a rod 21 mounted within the sleeve 7 and extendin beyond the rear end thereof and terminatlng in an arm 22 pivotally engaging the lever 9 as at 23.

A spring 24 1s interposed between the 1nner end of the rod 21 and the controller box 4 to normally actuate the rod 21 and bracket 22 thereon to retain the roller 10 of the lever 9 within the plane of the cam guides 12 and 13. v

The double cam portions 13, telescopically mounted within each end of the cam guides 12 are adjustable independently and vertically by means of a screw threaded rod 25 which engages threaded portions of supporting brackets 26 connected to opposite internal sides of the double cam portions 13, said brackets 26 being provlded with heels 27 arranged to slidably engage ay supporting plate 28 fastened to the Wall of the elevator shaft 1 and within which said rod 25 is rotatably mounted, to revent lateral movement or rotation of saidp cam portions 13 when the threaded rod 25 is rotated. The said rod 25 is squared at one end as at 29 which end projects beyond the endof its respective cam portion 13 to render the. same accessible for adjustment purposes.

Alternate cam surfaces on either side of the double cam portions 13 extend beyond the vertical longitudinal center of said guides 12 and cams 13, or, be ond the plane of the stop or mid position o the controller handle 15 or of the roller 10 on the lever 9, the purpose of which will hereinafter be more fully set forth.

In operation the elevator 3 is started upward by moving the controller handle 15 to the extreme left which will cause the contact bar to be moved to the same position by means of the centering springs 16 thereby causing said bar 5 to engage contacts 6 to move the elevator 3 upwardly at full speed.

'-While the controller handle 15 is held in this position the elevator 3 will continue to travel upwardly in the shaft 1. To stop the car at any predetermined point or floor 31 the controller handle 15 is moved to a stop position'or vertically to the controller box '4 at any point before said floor or predetermined point is reached, it being understood, by the term predetermined point, that the floors are indicated for the reason that the double cam portions 13 are set to stop the elevator 3 at said points or floors.

Movement of said handle 15 to said stop position will cause the centering springs 16 to move the roller 10 on the lever 9 against the adjacent side of the cam guide 14 and thereby permit the contact arm 5 to engage such contacts as will produce a slower Speed of the elevator 3 as disclosed in dotted lines in Fig. 1 of the drawings.

As the elevator 3 continues to rise the roller l() will transverse the adjacent side of the double cam portion 13 adjacent said predetermined point or Hoor 31, being actuated by the centering springs 16, and move to a stop position, the several parts being then in the position disclosed in Fig. 1 of the drawings. It will be noted that the opposite side of the adjacent double cam portion 13 now above the roller 10 will tend to move the roller 10, lever 9 and contact arm 5 to the opposite set of contacts 6 should the elevator continue to rise, owing to the controller arm being setto stop position at a period too late to permit the roller 10 to move gradually to said stop position, or should some person tamper with the controlling contacts of the operating mechanism arranged remote from the elevator 3, and thereby operate said contact arm 5 to move the elevator 3 in an opposite direction and return the same to the predetermined point, while the handle 15 is held in stop position. j

The same operation is effected should the same conditions prevail while the elevator 3 is being lowered.

In order to facilitate the release of the roller 10, lever 9 and contact arm 5 from the controlling cam guides 12 and 13 when it is desired to stop the elevator at any point within the elevator shaft 1, I have provided the hereinbefore described grip 17 which is operatively connected to and arranged to be operated with the controller handle 15 whereby said elevator 3 may be brought to a stop position at any point within the shaft 1 by a single movement of one hand of the operator.

This is accomplished by gripping said grip 17 against the handle 15 which will actuate the rod 21 and move the same against the tension ofthe spring 24 and thereby move the lever 9 and roller 10 thereon from the plane of the cam guides 12 and 13 when the contact arm 5 may be moved simultaneously with said controller 15. i

By releasing the grip 17 the several parts will be restored to normal position.

By providing the adjustable telescopic double cam portions 13 mounted upon the guides 12 it is obvious that said cam portions 13 may be readily adjusted to control the Contact arm 5 to bring the elevator 3 to a stop at the desired predetermined point.

If the elevator continually stops a certain distance'below a floor 31 when used in conjunction with the controlling means herein set forth it is evident that if said cams 13 are moved arr equal distance upwardly that the stopping point of said elevator 3 will likewise be moved upwardly an equal distance. l

Having thus described my invention, what I claiml as new and desire to secure by Letters Patent is:

and elevator therein, of a contact arm for controlling movement of said elevator within said shaft; means for normally actuating said arm to move said elevator in either direction and to stop the same; and adjustable controlling means for preventing movement of said contact arm to a stop position when the actuating means therefor have been moved to such position between predetermined points within said shaft, and to permit movement of said contact arm toV a stop position to stop movement Vof said elevator at the next adjacent predetermined point.

2. The combination with an elevator shaft and elevator therein, of a contact arm for controlling movement of said elevator within said shaft; means for normally actuating said arm to move the elevator in either direction and to stop the same; controlling means for preventing movement of said Contact arm to a stop position when the actuating means therefor have been moved to such position between predetermined points within said shaft, and to permit movement of said contact arm to said stop position to stop movement of said elevator at thenext adjacent predetermined point; and means operatively connected to the actuating means of the controller arm and arranged to be operated therewith for releasing said contact arm from said controlling means whereby said elevator may be stopped at any point between said predetermined points.

3. The combination with an elevator shaft and elevator therein of a contact arm for controlling movement of said elevator within said shaft; means for normally actuating said contact arm to move said elevator in either direction and to stop the same; adjustable controlling means for preventing movement of said contact arm to'a stop position when the actuating means therefor have been moved to such osition between predetermined points within the shaft, and to permit movement of said contact arm to said stop position to stop movement of said elevator at the next adjacent predetermined point; and means operatively connected to the actuating means and arranged to be operated therewith for releasing said contact arm from said controlling means whereby said elevator may be stopped at any point between said predetermined points.

, 4. The combination with an elevator shaft and elevator therein, of a contact arm for controlling movement of said elevator within said shaft; means for normally actuating said arm to move said elevator in either di- Vrecton and to stop the same; and controlling ment of said elevator at the neXt adjacent predetermined point, and to move said contact arm to move said elevator in an opposite direction when said elevator passes said predetermined point while the contact arm is in a stop position.

5. The combination with an elevator shaft and elevator therein, of a contact arm for controlling movement of said elevator within said shaft; means for normally actuating said arm to move said elevator in either direction and to stop the same; and adjustable controlling means for preventing movement of said contact arm to a Stop position when the actuating means therefor have been moved to such position, and to permit movement of said contact arm to such stop position to stop movement of said elevator at the next adjacent predetermined point, and to move said contact arm to move said elevator in a-n opposite direction when said elevator passes said predetermined point while said contact arm is in such stop position.

6. The combination with an elevator shaft and elevator therein, of a contact arm for controlling movement of said elevator within said shaft; means for normally actuating said arm to move said elevator in either direction and to stop the same; adjustable controlling means for preventing movement of said Contact arm to a stop position when the actuating means therefor have been moved to such position, and to permit movement of said contact arm to such a stop position to stop movement of said elevator at the next adjacent predetermined point, and to move said contact arm to move said elevator in an opposite vdirection when said elevator passes said predetermined point while said contact arm is in such stop position; and means operatively connected to said contact arm actu.- ating means and arranged to be operated therewith for releasing said contact arm from said controlling means whereby said elevator may be stopped at any point between said predetermined points.

7. The combination with an elevator shaft and elevator therein, of va contact arm for controlling movement of said elevator within said shaft; means for normally actuating said contact arm to move said elevator in either direction and to stop the same; cam guides mounted within the shaft; and means operatively connecting the contact arm with the cam guides and arranged to prevent movement of said contact arm to a stop osition when the actuating means therefor ave been moved to such position between predetermined points within said shaft and to permit movement of said arm to said stop position to stop movement of said elevator at the next adjacent predetermined point whereby said elevator may be brought to a stop at a level'with said predetermined point.

8. rlhe combination with an elevator shaft and elevator therein, of a contact arm for controlling 'movement of said elevator within said shaft; means for normally actuating said Contact arm to move said e evator in. either direction and to stop the same; cam guides mounted within the shaft; means operatively connecting the contact arm with the cam guides and arranged to prevent movement of said contact arm to a stop position when the actuating means therefor have been moved to such position between predetermined points Within said shaft and to permit movement of said arm to said stop positionto stop movement of said elevator at the next adjacent predetermined point whereby said elevator may be brought to al stop at a level with said predetermined point; and to move said arm to move the elevator in an opposite direction when said e1evater passes said point while said contact arm is in said stop position.

9. The combination with an elevator shaft and elevator therein, of a contact arm for controlling movement of said elevator within said shaft; means for normally actuating said Contact arm to move said elevator in either direction and to stop the same;

cam guides vmounted within the shaft;v

means operatively connecting the contact arm with the cam guides and arranged to prevent movement of said contact arm to a stop position when the actuating means therefor have been moved to such position between predetermined points within said shaft and to permit movement of said arm to said stop position to stop movement of said elevator at the next adJacent predetermined point whereby said elevator may be brought to .a stop at a level with said predetermlned point, and to move said contact arm to move the'elevator in an opposite direction when said elevator passes said point while said contact arm is in said stop position; and means operatively connected to said actuating means and arran d to be operated therewith to release saidcontact arm from said connecting means.

In witness whereof I have hereunto set my signature.

RUDOLF A. ISENBERG. 

